US11976825B2 - Air conditioning system and method for controlling same - Google Patents

Air conditioning system and method for controlling same Download PDF

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Publication number
US11976825B2
US11976825B2 US17/049,929 US201817049929A US11976825B2 US 11976825 B2 US11976825 B2 US 11976825B2 US 201817049929 A US201817049929 A US 201817049929A US 11976825 B2 US11976825 B2 US 11976825B2
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Prior art keywords
air inlet
return air
conditioning system
duct portion
branch
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US17/049,929
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US20210095868A1 (en
Inventor
Haiwei HUANG
Kai Wang
Fengqiang HUANG
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Assigned to GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI reassignment GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUANG, Fengqiang, HUANG, Haiwei, WANG, KAI
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0041—Indoor units, e.g. fan coil units characterised by exhaustion of inside air from the room
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/001—Ventilation with exhausting air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/001—Ventilation with exhausting air ducts
    • F24F2007/002—Junction box, e.g. for ducts from kitchen, toilet or bathroom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties

Definitions

  • the present disclosure relates to a field of air conditioning technology, and more particularly, to an air conditioning system and a method for controlling the same.
  • a solution known to the inventors is usually providing a cooking fume filter system at a return air inlet of the air conditioner in the kitchen, such as providing a filter net at the return air inlet. In this case, the filter net needs to be replaced frequently, and a filtering effect of the filter net is poor, thus the cooking fume can still enter the air conditioner in the kitchen.
  • the present disclosure provides an air conditioning system and a method for controlling the same to prevent cooking fume entering an indoor unit body.
  • the present disclosure adopts following technical solutions.
  • An air conditioning system for air conditioning of indoor space including an indoor unit body.
  • the indoor unit body includes a cavity and a heat exchanger provided in the cavity.
  • the air conditioning system further includes at least one return air inlet connecting the indoor space to the cavity.
  • the at least one return air inlet includes a first return air inlet.
  • the indoor unit body is located in an upper part of the indoor space, and the first return air inlet is located at a lower part of the indoor space.
  • the at least one return air inlet further includes a second return air inlet located in the upper part of the indoor space
  • the air conditioning system further includes a first switch device.
  • the first switch device connects the cavity to at least one of the first return air inlet and the second return air inlet.
  • a cooking fume detection device is provided at the second return air inlet.
  • the air conditioning system further includes the air conditioning system further comprises an exhaust duct, and the exhaust duct connects the second return air inlet to an outdoor space.
  • the air conditioning system further includes an airflow driving device, and the airflow driving device drives air in the indoor space to be exhausted to the outdoor space through the second return air inlet and the exhaust duct.
  • an air inlet is provided in a cavity wall of the cavity.
  • the air conditioning system further includes an air duct structure communicating with the air inlet and the first return air inlet and the second return air inlet are arranged on the air duct structure.
  • the air duct structure includes a main air duct portion connected to the indoor unit body and a plurality of branch air duct portions connected to the main air duct portion, and the first return air inlet and the second return air inlet are arranged on the branch air duct portion.
  • the first switch device is disposed in an inner cavity of the main air duct portion; and/or,
  • first branch air duct portion and/or the second branch air duct portion are/is arranged to extend in a vertical direction.
  • the first branch air duct portion is arranged inside a wall, and the first return air inlet is exposed outside the wall.
  • the air conditioning system is configured for air conditioning in a kitchen.
  • the first return air inlet is arranged on a cabinet in the kitchen or arranged on a wall close to a floor of the kitchen, and the second return air inlet is arranged on a ceiling of the kitchen or on a wall adjacent to the ceiling.
  • a method for controlling the air conditioning system mentioned above is provided.
  • a cooking fume detection device is provided at the second return air inlet, and the method includes:
  • the method for controlling the air conditioning system includes:
  • the air conditioning system provided in the present disclosure is provided with a first return air inlet located at the lower part of the indoor space. In this way, even if the cooking fume exists in the indoor space, the hot cooking fume is in the upper part of the indoor space. Air returning through the first return air inlet located at the lower part of the indoor space can effectively prevent the cooking fume from entering the indoor unit body, thereby ensuring the cleanliness of the indoor unit body and prolonging the service life of the air conditioning system.
  • FIG. 1 is a schematic structural diagram illustrating an air conditioning system according to an embodiment of the present disclosure
  • FIG. 2 is a first schematic structural diagram illustrating an indoor unit body and a main air duct portion according to an embodiment of the present disclosure
  • FIG. 3 is a second schematic structural diagram illustrating an indoor unit body and a main air duct portion according to an embodiment of the present disclosure.
  • the present disclosure provides an air conditioning system for air conditioning of indoor space, especially a space inside a kitchen.
  • the air conditioning system is also applicable to other indoor spaces with a same air quality problem.
  • the air conditioning system includes an indoor unit body 1 , which is configured to perform functions known to the inventors, such as cooling, heating, and dehumidification of an air conditioner.
  • the indoor unit body 1 includes a cavity 100 and devices known to the inventors such as a heat exchanger and a fan arranged in the cavity 100 .
  • the air conditioning system also includes at least one return air inlet capable of connecting the indoor space to the cavity 100 and allowing air to return to the indoor unit body 1 .
  • the at least one return air inlet includes a first return air inlet 2 , and the indoor unit body 1 is located in an upper part of the indoor space. It can be understood that the upper part herein includes a top area of the indoor space.
  • the first return air inlet 2 is located at a lower part of the indoor space.
  • the lower part herein includes a bottom area of the indoor space. That is, the first return air inlet 2 communicates with a lower space of the indoor space. In this way, even if cooking fume exists in the indoor space such as the kitchen, hot cooking fume is in the upper part of the indoor space. Air returning through the first return air inlet 2 located in the lower part of the indoor space can effectively prevent the cooking fume from entering the indoor unit body 1 , thereby ensuring cleanliness of the indoor unit body 1 , and prolonging the service life of the air conditioning system.
  • the return air inlet further includes a second return air inlet 3 located in the upper part of the indoor space. That is, the second return air inlet 3 communicates with an upper space of the indoor space.
  • the air conditioning system further includes a first switch device 4 , and the first switch device 4 connects the cavity 100 to at least one of the first return air inlet 2 and the second return air inlet 3 . That is, the first switch device 4 may be constructed not to connect the cavity 100 to the second return air inlet 3 when the cavity 100 is in communication with the first return air inlet 2 , and not to communicate with the first return air inlet 2 when the cavity 100 is in communication with the second return air inlet 3 .
  • the first switch device 4 is also constructed to connect the cavity 100 only to the first return air inlet 2 , or only to the second return air inlet 3 , or to both the first return air inlet 2 and the second return air inlet 3 at the same time, or to neither the first return air inlet 2 nor the second return air inlet 3 .
  • air returning through the first return air inlet 2 prevents the cooking fume from entering the indoor unit body 1 , and when no cooking fume exists in the indoor space, and when the indoor unit body 1 operates for cooling, air returning through the second return air inlet 3 ensures cooling efficiency of the indoor unit body 1 for the indoor space (as cold air will sink, air returning through the first return air inlet 2 located at the lower part is not conducive to hot air returning to the indoor unit body 1 for heat exchange).
  • air returning through the first return air inlet 2 also ensures a heating efficiency of the indoor unit body 1 for the indoor space (as hot air will float, air returning through the second return air inlet 3 located at the upper part is not conducive to cold air returning to the indoor unit body 1 for heat exchange).
  • the first return air inlet 2 is arranged on a cabinet in the kitchen or on a wall adjacent to a floor of the kitchen, and the second return air inlet 3 can be arranged on a ceiling of the kitchen or on a wall adjacent to the ceiling, so as to ensure cleanliness of a space of the kitchen.
  • the air conditioning system further includes an air duct structure 5 communicating with an air inlet 11 of the cavity, and the return air inlet is arranged in the air duct structure 5 , so that an arrangement of a position and an orientation of the indoor unit body 1 is more flexible.
  • the indoor unit body 1 is arranged vertically (referring to FIG. 3 ) or horizontally (referring to FIG. 2 ), and is disposed on the ceiling or in the cabinet.
  • a structure of the indoor unit body 1 is, for example, a ground mounted unit, and can be installed according to an actual situation, or is a household unit.
  • the air duct structure 5 includes a main air duct portion 51 connected to the indoor unit body 1 and a plurality of branch air duct portions connected to the main air duct portion 51 .
  • the main air duct portion 51 and the branch air duct portions are a one-piece structure, or form a non-detachable connection by bonding, welding, etc., or form a detachable connection, such as a snap connection, a plug connection, a fastener connection, etc., so that it is convenient to disassemble the air duct structure.
  • a plurality of ports are provided in the main air duct portion 51 , and the branch air duct portions are inserted into the ports respectively to realize connections between the main air duct portion 51 and the branch air duct portions.
  • each return air inlet is arranged at each of the branch air duct portions.
  • the plurality of branch air duct portions include a first branch air duct portion 52 and a second branch air duct portion 53 .
  • the first return air inlet 2 is arranged at the first branch air duct portion 52 .
  • first branch air duct portion 52 is connected to the main air duct portion 51 through a first port 511 , and the first return air inlet 2 is disposed at another end of the first branch air duct portion 52 .
  • the first return air inlet 2 is led to the lower part of the indoor space by the first branch air duct portion 52 .
  • the second return air inlet 3 is arranged at the second branch air duct portion 53 .
  • one end of the second branch air duct portion 53 is connected to the main air duct portion 51 through a second port 512 , and the second return air inlet 3 is disposed at another end of the second branch air duct portion 53 .
  • the second return air inlet 3 is led to the upper part of the indoor space by the second branch air duct portion 53 .
  • a plurality of return air inlets is also provided on a same branch air duct, and air returning through different positions is realized by blocking different return air inlets.
  • the first branch air duct portion 52 and the second branch air duct portion 53 are arranged to extend in a vertical direction.
  • the first branch air duct portion 52 or the second branch air duct portion 53 is arranged to extend in a vertical direction.
  • the indoor unit body 1 is usually disposed at the top area of the space or an upper area proximate to the top area of the space, a length of the first branch air duct 52 is relatively long. In order to save space, in some embodiments, the first branch air duct 52 is embedded in the wall.
  • the first switch device 4 is an air valve provided at the first return air inlet 2 , the second return air inlet 3 , or inside each branch air duct portion. To facilitate control, in some embodiments, the first switch device 4 is disposed in an inner cavity of the main air duct portion 51 . In one embodiment, the first switch device 4 includes a first partition 41 arranged between the first port 511 and the second port 512 , a first baffle 42 hinged to the first partition 41 , and a first driving device (not shown in the figure) that drives the first baffle 42 to rotate.
  • the first baffle 42 When the first baffle 42 rotates toward the first port 511 and abuts against a cavity wall between the first port 511 and the air inlet 11 , the first baffle 42 disconnects the first port 511 from the air inlet 11 , and the second port 512 communicates with the air inlet 11 . At this time, the air returns through the second return air inlet 3 .
  • the first baffle 42 rotates toward the second port 512 and abuts against a cavity wall between the second port 512 and the air inlet 11 , the first baffle 42 disconnects the second port 512 from the air inlet 11 , and the first port 511 communicates with the air inlet 11 . At this time, the air returns through the first return air inlet 2 .
  • the air conditioning system also includes an exhaust duct 6 capable of connecting the second return air inlet 3 to outdoor space.
  • an exhaust duct 6 capable of connecting the second return air inlet 3 to outdoor space. In this way, the air in the indoor space is exhausted to outdoor space through the second return air inlet 3 and the exhaust duct 6 .
  • the cooking fume gathered near the ceiling is exhausted to outdoor space through the second return air inlet 3 and the exhaust duct 6 , so as to effectively prevent the cooking fume from polluting the ceiling.
  • the air conditioning system further includes an airflow driving device 7 driving the air in the indoor space to be exhausted to the outdoor space through the second return air inlet 3 and the exhaust duct 6 .
  • the airflow driving device 7 assists in exhausting the cooking fume, thereby enabling the cooking fume to be exhausted to the outdoor space as soon as possible, and further preventing the cooking fume from condensing on the ceiling.
  • the airflow driving device 7 is, for example, a fan arranged in the inner cavity of the second branch air duct portion 53 to provide a driving force as much as possible for a movement of the cooking fume.
  • the air conditioning system further includes a second switch device 8 .
  • the second switch device 8 connects the exhaust duct 6 to the second return air inlet 3 , or disconnects the exhaust duct 6 from the second return air inlet 3 .
  • the second switch device 8 may be, for example, an air valve.
  • the second switch device 8 includes a second baffle 81 and a second driving device (not shown in the figure) that drives the second baffle 81 to rotate.
  • the second baffle 81 is hinged to one side edge of the exhaust duct 6 .
  • the second baffle 81 When the second driving device drives the second baffle 81 to abut against another side edge, opposite to the one side edge, of the exhaust duct 6 , the second baffle 81 closes the exhaust duct 6 , and thus the second return air inlet 3 is not in communication with the exhaust duct 6 .
  • the second driving device drives the second baffle 81 to abut against the first partition 41 , the second baffle 81 opens the exhaust duct 6 , and the second return air inlet 3 communicates with the exhaust duct 6 , and the second return air inlet 3 is not communication with the air inlet 11 .
  • the second switch device 8 further includes a second partition 82 .
  • the second port 512 is arranged side by side with the exhaust duct 6 , and the second partition 82 is disposed between the first partition 41 and the exhaust duct 6 .
  • One side edge of the second partition 82 is connected to one side cavity wall of the main air duct portion 51 , and the second baffle 81 is hinged to another side edge, opposite to the one side edge, of the second partition 82 .
  • the second baffle 81 When the second baffle 81 abuts on another side cavity wall, opposite to the one side cavity wall, of the main air duct portion 51 , the second baffle 81 connects the second return air inlet 3 with the exhaust duct 6 , and the second return air inlet 3 is not in communication with the air inlet 11 .
  • a cooking fume detection device 9 is provided at the second return air inlet 3 .
  • the cooking fume detection device 9 is arranged, for example, inside the second branch air duct portion 53 .
  • a detection value of the cooking fume detection device 9 is used to determine whether cooking fume exists in the indoor space, so as to perform a corresponding control. For example, when the detection value of the cooking fume detection device 9 is greater than or equal to a predetermined value, the first switch device 4 is controlled to connect the cavity 100 to the first return air inlet 2 . In this case, the air returns to the indoor unit body 1 through the first return air inlet 2 , thereby preventing excessive cooking fume from entering the indoor unit body 1 .
  • the first switch device 4 When the detection value of the cooking fume detecting device 9 is less than a predetermined value, and when the indoor unit body 1 is operating for cooling, the first switch device 4 is controlled to connect the cavity 100 to the second return air inlet 3 , thereby ensuring cooling effect of the indoor unit body 1 .
  • the detection value of the cooking fume detection device 9 is less than the predetermined value, and when the indoor unit body 1 is operating for heating, the first switch device 4 is controlled to connect the cavity 100 to the first return air inlet 2 , thereby ensuring a heating effect of the indoor unit body 1 .
  • the exhaust duct 6 is opened so that the second return air inlet 3 is in communication with the outdoor space.
  • the airflow driving device 7 is started. In this way, the cooking fume ascending to the upper space is quickly exhausted to the outdoor space through the second return air inlet 3 and the exhaust duct 6 , thereby ensuring the cleanliness of the ceiling.
  • the air conditioning system provided in the present disclosure is provided with a first return air inlet 2 located at the lower part of the indoor space. In this way, even if the cooking fume exists in the indoor space, the hot cooking fume is in the upper part of the indoor space. Air returning through the first return air inlet 2 located in the lower part of the indoor space effectively prevents the cooking fume from entering the indoor unit body 1 , thereby ensuring cleanliness of the indoor unit body 1 and prolonging the service life of the air conditioning system.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)
  • Ventilation (AREA)
  • Duct Arrangements (AREA)
  • Air-Flow Control Members (AREA)
US17/049,929 2018-04-23 2018-12-17 Air conditioning system and method for controlling same Active 2039-06-05 US11976825B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201810368555.X 2018-04-23
CN201810368555.XA CN108644891B (zh) 2018-04-23 2018-04-23 空气调节系统及其控制方法
PCT/CN2018/121542 WO2019205667A1 (zh) 2018-04-23 2018-12-17 空气调节系统及其控制方法

Publications (2)

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US20210095868A1 US20210095868A1 (en) 2021-04-01
US11976825B2 true US11976825B2 (en) 2024-05-07

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US (1) US11976825B2 (zh)
EP (1) EP3779292A4 (zh)
JP (1) JP7186240B2 (zh)
KR (1) KR102547927B1 (zh)
CN (1) CN108644891B (zh)
WO (1) WO2019205667A1 (zh)

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CN108644891B (zh) * 2018-04-23 2023-12-08 珠海格力电器股份有限公司 空气调节系统及其控制方法

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US20210095868A1 (en) 2021-04-01
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